we have just gotten this, a bulletin from law enforcement. people being asked to be on the lookout for a darker skinned or black male with a black backpack and a black sweatshirt, possible foreign national, accent unclear, what the accent of the individual is, but believes to have some sort of an accent. we are just getting that information. john king is working his sources now. he joins us with the latest on the investigation. john, what are you hearing? >> well, that bolo, shorthanded police lingo for be on the lookout, just issued. i will give you reporting from all of our cnn team. a little more on that bolo. law enforcement is looking for a darker skinned or black male with a black backpack, possible foreign national because of an accent. the bolo notes to law enforcement officials says five minutes before the first explosion, this individual attempted to gain entry to a restricted area and when turned away, he broke eye contact and pulled his sweatshirt and hood over his head. no further info on him is what the bolo says. this is law en